Bulldozer front working device and bulldozer

Abstract

The invention discloses a bulldozer front working device. A bulldozing plate is connected with a left push bar through a first hinge assembly in a hinged mode and connected with a right push bar through a second hinge assembly in a hinged mode; a side position support bar is arranged between the bulldozing plate and the left push bar, and the side position support bar is connected with the bulldozing plate through a third hinge assembly in a hinged mode and connected with the left push bar through a fourth hinge assembly in a hinged mode; a turnover driving device is arranged between the bulldozing plate and the right push bar, and the turnover driving device is connected with the bulldozing plate through a fifth hinge assembly in a hinged mode and connected with the right push bar through a sixth hinge assembly in a hinged mode; the left push bar is connected with a rack through a seventh hinge assembly in a hinged mode, and the right push bar is connected with the rack through an eighth hinge assembly in a hinged mode; the inner side of the left push bar is provided with a left fulcrum bar, the inner side of the right push bar is provided with a right fulcrum bar, and the left fulcrum bar is connected with the right fulcrum bar through a ninth hinge assembly in a hinged mode. The transverse loading distribution of the bulldozer front working device is more uniform, and the structural strength is higher. The invention further discloses a bulldozer using the bulldozer front working device.

Description

technical field [0001] The invention relates to the technical field of bulldozers, in particular to a front working device of the bulldozer. The invention also relates to a bulldozer using the front working device of the bulldozer. Background technique [0002] The bulldozer is a very common civil engineering machinery, and the front working device of the bulldozer is the main material handling device of the bulldozer, and its working performance is also widely concerned by people. [0003] At present, during the working process of the front working device of the bulldozer, since the pushing frame mechanism of the front working device of the bulldozer cannot bear the lateral load, two supports are usually arranged symmetrically between the bulldozing plate and the side push rod of the pushing frame. To limit the degree of freedom of the lateral swing of the jacking frame mechanism, avoid structural deformation or damage of the front working device of the bulldozer, and make...

AI Technical Summary

Problems solved by technology

[0004] However, although the front working device of the bulldozer with the above-mentioned structure can meet the basic needs of use, because it adopts the support rod directly assembled with the bulldozing blade and the push rod as the compensation device, it mainly relies on the support rod and the bulldozing blade and the push rod. The movement pair gap between the push rods and the deformation of the rods are used to realize the roll motion, which not only causes internal stress in the support rods, but also causes the bulldozing blade to swing sideways during work due to the gap, which makes the hinge pin prone to structure. impact and accelerate the wear of related parts. In addition, when bearing lateral force, due to the uneven gap between the left and right support rods, often only one side of the push rod bears the load or is subject to a large load, which is easy to cause bending fatigue damage

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